Gas-burner.



E. e. VAN ZANDT.

GAS BURNER. APPLICATION FILED DEQ.14, 1909. RENEWED SEPT. 26, 1912.

Patented Nov. 26, 1912.

COLUMBIA PLANOGRAPH c0., WASHINGTON. D. c.

llhllTED STATES PATENT @FFTQE EDWIN Gr. VAN ZANDT, OF ST. LOUIS, MISsoURI, ASSIGNOR. TO van ZANIDI GAS APPLIANCE COMPANY, or ST. LoUIs, MISSOURI, A coaroaa'rron or MISSOURI.

GAS-BURNER.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed. December 14, 1909, Serial No. 533,051. Renewed'Septembr 26, 1912. Serial No. 722,531.

T 0 all whom it may concern:

Be it known that I, EDWIN G. VAN ZANDT, a citizen of the United States, and resident of the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification.

This invention relates to gas-burners and more particularly to such as shown in the United States Letters Patent No. 838,596, granted to me December 18, 1906, and Letters Patent No. 87 6,507, granted to me J anuary 14, 1908; and this invention relates more particularly to an improved burner, having for its object to provide a sphericallyshaped burner by means of which most of the products of combustion which may include combustible gases due to incomplete initial combustion of an initial burner are consumed in that the products of combustion of the initial burner are retained by a substantially spherical shell having lateral openingsand burned as they pass out of the burner openings.

The invention consists of a spherically,

shaped shell or container above or around an initlal burner, and more partlcularly a shell with openings for the inflow of air,

with openings for the outflow of combustible gases and ignition thereof at the exterior of the same, and with flanges or obstructing walls near the top of the shell or container in order to obstruct the flow of the.

products of combustion so as to treat them by heat and air before they are permitted to pass out of the openings at the top of the shell or container.

In the accompanying drawing, Figure 1 is a vertical central section of my improved burner taken on line 11 of Fig. 2, Fig. 2 is a plan view of the same, Fig. 3 is a vertical transverse section taken on line 3-3 of Fig, 2, showing in detail the V-shaped opening of Fig. 2, and Fig. 4 is a detail plan view of the V-s'haped opening, showing the opening to be of varying width,

shape as stated, and is provided near its lower flattened part with openings 9 of out wardly flaring shape. The upper part of the spherical body 8 is provided with elongated outlet or burner-openings 16 preferably of V-shaped cross-section as shown in Fig. 3, which are widest at their central portion and' gradually narrow down toward their ends as shown in Fig. 4. Some of the openings are longer than the others. Other shapes than V-shape and a different number of openings may be used as long as the size of the opening is of such a proportion as to take care of the proper ignition of gases :to be burned. Intermediately between the openings 16 and the openings 9 near the bottom of the spherical shell or container 18 are flanges or obstruction-walls 11- three in number in the embodiment shown in the drawing, which flanges are at a suitable angle to the inner part of the shell or container and project inwardly therefrom so as to obstruct the flow of the products of combustion resulting from the burning of gas at the initial burner 7 and which have spaces 12 between the individual flanges. By reason of the obstruction caused by these flanges 11 the products of combustion are retarded in their movement upward and passing over the inner edges of the flanges 11 are spread in this condition, and mingled with air, and thus mixed, heated, and collected in the upper part of the spherical shell or container and between the openings 16 and the flanges or walls 11, the space so formed between the openings 16 and the flanges or walls 11 acting as a reservoir 20 for the collected heated products of combustion. The proportion of parts and their relation to each other are so arranged that when the gases thus collected are sufiiciently treated they gradually emanate from the opening 16 and are caused to ignite atthe exterior of the shell or container, the bottom of the flame thus formed, following the inclined surfaces of the walls of the shell or container which form the ll-shaped or flaring openings 16. In Fig. 4t is shown a detail plan view of the opening which I prefer to use with my burner, and this shows the central portion ofthe burner opening 16 to be wider at the place indicated by 21 than at its ends indicated by 22, and so arranged as to meet the peculiar requirements of the flame emanating from the shell.

In Fig. l the openings are shown to follow the curvature of the spherical shape or container, but I do not wish to limit myself to the curved form of opening, since an opening wider at its central portion than at its ends may also be used advantageously when straight or uncurved. A straight or level opening may result when it is made small and at a part of the shell which is of small curvature.

In the operation of my device, the gas emanating from the initial burner is ignited, the products of combustion resulting from the initial burning, containing combustible gases due to incomplete combustion, are gathered in the shell, subjected to heat, and emanating from the shell ignited at the exterior of the top openings of the shell. Ihe flanges at the interior of the shell around the openings, serve to separate and spread out the products of combustion and in this condition, as also when in the upper part of the shell, immediately prior to emanation, they are subjected to heat. Air for assisting combustion enters the openings at the lower part of the burner and produces a draft in upward direction through the shell. The initial burner 7 is operated on the Bunsen principle.

My invention consists further in providing a spherically shaped shell or container having openings at the bottom for the inflow of air and openings at the top forming burner openings for the products of combustion passing therethrough, the products of combustion being retained within the shell and burned at the exterior of the shell immediately at the burner opening, and further in providing inwardly projecting walls or flanges obstructing the flow of the products of combustion and spreading the same before their passage out of the spherical shell or container. The invention also consists in providing specially shaped burner openings which are larger at the central portion than at the ends.

I have shown one embodiment of my invention, but I do not wish to limit myself to the details of the same, since changes may be made therein without departing from the spirit of my invention.

I claim as new:

1. In a gas-burner, the combination of an initial burner, and a single shell surrounding the same, substantially spherical in shape, having a burner opening at the upper part of the shell, opening directly into the free air, lateral openings for horizontal inlet draft air only below the initial burner, the burner opening being restricted so as to retard and'retain theproducts of combustion within the shell and cause them to be burned at the exterior of the shell immediately at the burner opening.

2. In a gasburner, the combination of an initial burner, and a single shell surrounding the same, substantially spherical in shape, having a burner opening at the upper a substantially spherical shell or container surrounding the initial burner, having flanges projecting inwardly for obstructing the flow of the products of combustion of the initial burner, and a burner openlng at its upperpart, the products of combustion from the mitial burner being retained within the shell, retarded by the flanges, and burned at the exterior of the shell immediately at the burner opening. 1

4. In a gas-burner, a shell having a vent opening at the top part thereof, an annular series of inwardly projecting flanges on the inner face of said shell and disposed around said opening,,and spacedapart to leave an open space therebetween, an initial burner wlthin said shell.

5. In a gas-burner, an 1n1t1al burner, and

a shell surrounding the initial burner subr stantlally spherical in shape, a burner open- 7 ing at the upper part and inwardly projecting flanges on the inner face of the shell so disposed as to extend completely around said burner opening, the products of combustion from the initial burnerbeing retained within the shell, retarded by the flanges and burned at the exterior of the shell immediate at the burner opening.

6. In a gas-burner comprising a shell having a vent-opening in the top thereof, in wardly projecting flanges on the inner face of the shell and disposed around said opening, and an initial burner within said shell, said vent-opening being elongated and tapering toward each end. H

7. In a gas-burner having an initial burner, a shell or container over the initial burner having a burner opening at the top of the shell. wider at the central portion than at the ends, the products of combustion from the initial burner being retained within the shell and burned at the exteriorof t-heshell at the burner opening. I

8. In a gas-burner having an initial burner, a shell or container over the initialburner having an opening Wider at the central portion than at the ends, and of substantially V-shaped cross-section.

9. In a gas-burner, the combination of a substantially spherical shell having a flattened lower face and provided with a plusurrounding said vent-openings, and an initial burner arranged centrally Within the shell and adapted to discharge products of combustion directly Within and into the shell, certain of said openings being restricted whereby combustion is caused to take place both within and Without the shell.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

EDWIN G. VAN ZANDT.

Witnesses:

J 0s. B. WIDEN, HERRICK J. GRAY.

Gop'ies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

